<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <style>
      #bn{
        border-radius: 5px;
        border: none;
        color:azure;
        width:120px;
        height:30px;
      }
    </style>
  </head>
  <body>
    <h3>插件处于<span id='text'></span>状态</h3>
    <button id='bn'></button>
    <script src="popup.js"></script>
  </body>
</html>
